SC,
Can I comment that for an instructor you use very sloppy terminology.
The movement around the three axis of an aeroplane are: yaw, pitch and roll.
Autorotating is what you do in a helicopter when the engine stops.
Remember the set up for a spin?
When you are doing some slow flying and want to demonstrate a spin you will come up to the stall and when you are there slow down the inboard wing by giving a bootful of into spin rudder and at the same time increase the AOA on that inboard wing by giving opposite aileron.
What happens?
You spin.
Now compare that to the slip.
Which wing will stall first? The same wing as in the pro-spin scenario or the other one?
Think of the falling leaf manoeuvre and you will get the answer.
FD